<!DOCTYPE html>
<html>
<head>
    <title>page_demo</title>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
    <meta name="keywords" content=""/>
    <meta name="description" content=""/>
    <meta name="viewport" content="width=device-width,initial-scale=1.0,user-scalable=no">
    <meta name="format-detection" content="telephone=no"/>
    <meta name="apple-mobile-web-app-capable" content="yes"/>
    <meta name="apple-mobile-web-app-status-bar-style" content="black">
    <meta name="author" content="longtuhuanyu.com"/>
    <link rel="icon" href="data:;base64,=">
</head>
<body>
<div class="col-xs-12">
    <button type="submit" id="goback" class="btn btn-primary">点击返回上一级页面</button>
</div>
<div class="col-xs-12">
    <button type="submit" id="gonext" class="btn btn-primary">点击进入下一级页面</button>
</div>
</body>
</html>